OFFSET
0,5
COMMENTS
Equivalently, the row lengths are a non-self-conjugate partition of n.
FORMULA
a(n) = A330645(n)/2. - Omar E. Pol, Jan 11 2020
EXAMPLE
a(4) = 4 = 8/2; the 8 tableaux are:
1..1234..123..124..134..14..12..13
2........4....3....2....2...3...2.
3.......................3...4...4.
4.................................
The two tableaux of size 4 with symmetric shape are excluded:
12..13
34..24
CROSSREFS
KEYWORD
nonn
AUTHOR
Naohiro Nomoto, Feb 19 2002
EXTENSIONS
Edited by Franklin T. Adams-Watters, Nov 07 2006
a(26)-a(27) from Omar E. Pol, Jan 11 2020
STATUS
approved